| 摘要 |
<p>PURPOSE:To reduce the number of components and facilitate the assembling by forming a spring holding a transfer operating body switching the feed and discharge of an operating fluid into a C-shape with a wire rod and rotatably coupling its upper end section with the transfer operating body and its lower end section with a receiving body respectively. CONSTITUTION:An operating rod 13 reciprocated by the operating fluid fed and discharged from two operating fluid chambers 18, 19 in turn is inserted into a selector valve chamber 22 provided in a switching device main body 11. A switching piece 27 is operated by a transfer operating body 23 freely coupled with the operating rod 13, and the feed and discharge of the operating fluid to the operating fluid chambers 18, 19 can be switched. A spring 64 holding the transfer operating body 23 at one side or the other side of the selector valve chamber 22 is formed into a C-shape with a bent wire rod. Both end sections at the upper section of the spring are rotatably fitted to the transfer operating body 23, and the straight line section at the lower section is rotatably fitted to a receiving body 63 provided on the selector valve chamber 22.</p> |
